Preheat oven to 375°F.
Use a sharp knife or apple corer to remove the cores of the apples. Create a well that’s about 3/4-inch wide, and leave about half an inch at the bottom.
Mix the maple syrup, rolled oats, nuts, and cinnamon in a bowl. Divide the mixture between the apples, packing the wells firmly.
Arrange the apples in a baking dish. Pour the water into the bottom of the dish and bake for 35 to 45 minutes. The apples should be tender but not mushy. You can test the apples by poking a small knife through an apple. It should slide in and out of the apple easily, with no resistance. The skin on the apples will also become wrinkled and soft.
Serve with a scoop of vegan ice cream or So Delicious Coco Whip and a sprinkle of cinnamon.